1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
4 This file is part of systemd.
6 Copyright 2010 Lennart Poettering
8 systemd is free software; you can redistribute it and/or modify it
9 under the terms of the GNU Lesser General Public License as published by
10 the Free Software Foundation; either version 2.1 of the License, or
11 (at your option) any later version.
13 systemd is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 Lesser General Public License for more details.
18 You should have received a copy of the GNU Lesser General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
24 #include <sys/timerfd.h>
25 #include <sys/epoll.h>
28 #include "sd-messages.h"
33 #include "load-fragment.h"
34 #include "load-dropin.h"
42 Job* job_new_raw(Unit *unit) {
45 /* used for deserialization */
53 j->manager = unit->manager;
55 j->type = _JOB_TYPE_INVALID;
60 Job* job_new(Unit *unit, JobType type) {
63 assert(type < _JOB_TYPE_MAX);
65 j = job_new_raw(unit);
69 j->id = j->manager->current_job_id++;
72 /* We don't link it here, that's what job_dependency() is for */
77 void job_free(Job *j) {
79 assert(!j->installed);
80 assert(!j->transaction_prev);
81 assert(!j->transaction_next);
82 assert(!j->subject_list);
83 assert(!j->object_list);
86 LIST_REMOVE(run_queue, j->manager->run_queue, j);
89 LIST_REMOVE(dbus_queue, j->manager->dbus_job_queue, j);
91 sd_event_source_unref(j->timer_event_source);
93 sd_bus_track_unref(j->subscribed);
94 strv_free(j->deserialized_subscribed);
99 void job_uninstall(Job *j) {
102 assert(j->installed);
104 pj = (j->type == JOB_NOP) ? &j->unit->nop_job : &j->unit->job;
107 /* Detach from next 'bigger' objects */
109 /* daemon-reload should be transparent to job observers */
110 if (j->manager->n_reloading <= 0)
111 bus_job_send_removed_signal(j);
115 unit_add_to_gc_queue(j->unit);
117 hashmap_remove(j->manager->jobs, UINT32_TO_PTR(j->id));
118 j->installed = false;
121 static bool job_type_allows_late_merge(JobType t) {
122 /* Tells whether it is OK to merge a job of type 't' with an already
124 * Reloads cannot be merged this way. Think of the sequence:
125 * 1. Reload of a daemon is in progress; the daemon has already loaded
126 * its config file, but hasn't completed the reload operation yet.
127 * 2. Edit foo's config file.
128 * 3. Trigger another reload to have the daemon use the new config.
129 * Should the second reload job be merged into the first one, the daemon
130 * would not know about the new config.
131 * JOB_RESTART jobs on the other hand can be merged, because they get
132 * patched into JOB_START after stopping the unit. So if we see a
133 * JOB_RESTART running, it means the unit hasn't stopped yet and at
134 * this time the merge is still allowed. */
135 return t != JOB_RELOAD;
138 static void job_merge_into_installed(Job *j, Job *other) {
139 assert(j->installed);
140 assert(j->unit == other->unit);
142 if (j->type != JOB_NOP)
143 job_type_merge_and_collapse(&j->type, other->type, j->unit);
145 assert(other->type == JOB_NOP);
147 j->override = j->override || other->override;
148 j->irreversible = j->irreversible || other->irreversible;
149 j->ignore_order = j->ignore_order || other->ignore_order;
152 Job* job_install(Job *j) {
156 assert(!j->installed);
157 assert(j->type < _JOB_TYPE_MAX_IN_TRANSACTION);
159 pj = (j->type == JOB_NOP) ? &j->unit->nop_job : &j->unit->job;
163 if (j->type != JOB_NOP && job_type_is_conflicting(uj->type, j->type))
164 job_finish_and_invalidate(uj, JOB_CANCELED, false);
166 /* not conflicting, i.e. mergeable */
168 if (j->type == JOB_NOP || uj->state == JOB_WAITING ||
169 (job_type_allows_late_merge(j->type) && job_type_is_superset(uj->type, j->type))) {
170 job_merge_into_installed(uj, j);
171 log_debug_unit(uj->unit->id,
172 "Merged into installed job %s/%s as %u",
173 uj->unit->id, job_type_to_string(uj->type), (unsigned) uj->id);
176 /* already running and not safe to merge into */
177 /* Patch uj to become a merged job and re-run it. */
178 /* XXX It should be safer to queue j to run after uj finishes, but it is
179 * not currently possible to have more than one installed job per unit. */
180 job_merge_into_installed(uj, j);
181 log_debug_unit(uj->unit->id,
182 "Merged into running job, re-running: %s/%s as %u",
183 uj->unit->id, job_type_to_string(uj->type), (unsigned) uj->id);
184 uj->state = JOB_WAITING;
185 uj->manager->n_running_jobs--;
191 /* Install the job */
194 j->manager->n_installed_jobs ++;
195 log_debug_unit(j->unit->id,
196 "Installed new job %s/%s as %u",
197 j->unit->id, job_type_to_string(j->type), (unsigned) j->id);
201 int job_install_deserialized(Job *j) {
204 assert(!j->installed);
206 if (j->type < 0 || j->type >= _JOB_TYPE_MAX_IN_TRANSACTION) {
207 log_debug("Invalid job type %s in deserialization.", strna(job_type_to_string(j->type)));
211 pj = (j->type == JOB_NOP) ? &j->unit->nop_job : &j->unit->job;
214 log_debug_unit(j->unit->id,
215 "Unit %s already has a job installed. Not installing deserialized job.",
221 log_debug_unit(j->unit->id,
222 "Reinstalled deserialized job %s/%s as %u",
223 j->unit->id, job_type_to_string(j->type), (unsigned) j->id);
227 JobDependency* job_dependency_new(Job *subject, Job *object, bool matters, bool conflicts) {
232 /* Adds a new job link, which encodes that the 'subject' job
233 * needs the 'object' job in some way. If 'subject' is NULL
234 * this means the 'anchor' job (i.e. the one the user
235 * explicitly asked for) is the requester. */
237 if (!(l = new0(JobDependency, 1)))
240 l->subject = subject;
242 l->matters = matters;
243 l->conflicts = conflicts;
246 LIST_PREPEND(subject, subject->subject_list, l);
248 LIST_PREPEND(object, object->object_list, l);
253 void job_dependency_free(JobDependency *l) {
257 LIST_REMOVE(subject, l->subject->subject_list, l);
259 LIST_REMOVE(object, l->object->object_list, l);
264 void job_dump(Job *j, FILE*f, const char *prefix) {
273 "%s\tAction: %s -> %s\n"
276 "%s\tIrreversible: %s\n",
278 prefix, j->unit->id, job_type_to_string(j->type),
279 prefix, job_state_to_string(j->state),
280 prefix, yes_no(j->override),
281 prefix, yes_no(j->irreversible));
285 * Merging is commutative, so imagine the matrix as symmetric. We store only
286 * its lower triangle to avoid duplication. We don't store the main diagonal,
287 * because A merged with A is simply A.
289 * If the resulting type is collapsed immediately afterwards (to get rid of
290 * the JOB_RELOAD_OR_START, which lies outside the lookup function's domain),
291 * the following properties hold:
293 * Merging is associative! A merged with B merged with C is the same as
294 * A merged with C merged with B.
296 * Mergeability is transitive! If A can be merged with B and B with C then
299 * Also, if A merged with B cannot be merged with C, then either A or B cannot
300 * be merged with C either.
302 static const JobType job_merging_table[] = {
303 /* What \ With * JOB_START JOB_VERIFY_ACTIVE JOB_STOP JOB_RELOAD */
304 /*********************************************************************************/
306 /*JOB_VERIFY_ACTIVE */ JOB_START,
307 /*JOB_STOP */ -1, -1,
308 /*JOB_RELOAD */ JOB_RELOAD_OR_START, JOB_RELOAD, -1,
309 /*JOB_RESTART */ JOB_RESTART, JOB_RESTART, -1, JOB_RESTART,
312 JobType job_type_lookup_merge(JobType a, JobType b) {
313 assert_cc(ELEMENTSOF(job_merging_table) == _JOB_TYPE_MAX_MERGING * (_JOB_TYPE_MAX_MERGING - 1) / 2);
314 assert(a >= 0 && a < _JOB_TYPE_MAX_MERGING);
315 assert(b >= 0 && b < _JOB_TYPE_MAX_MERGING);
326 return job_merging_table[(a - 1) * a / 2 + b];
329 bool job_type_is_redundant(JobType a, UnitActiveState b) {
339 b == UNIT_INACTIVE ||
342 case JOB_VERIFY_ACTIVE:
353 b == UNIT_ACTIVATING;
356 assert_not_reached("Invalid job type");
360 void job_type_collapse(JobType *t, Unit *u) {
365 case JOB_TRY_RESTART:
366 s = unit_active_state(u);
367 if (UNIT_IS_INACTIVE_OR_DEACTIVATING(s))
373 case JOB_RELOAD_OR_START:
374 s = unit_active_state(u);
375 if (UNIT_IS_INACTIVE_OR_DEACTIVATING(s))
386 int job_type_merge_and_collapse(JobType *a, JobType b, Unit *u) {
387 JobType t = job_type_lookup_merge(*a, b);
391 job_type_collapse(a, u);
395 static bool job_is_runnable(Job *j) {
400 assert(j->installed);
402 /* Checks whether there is any job running for the units this
403 * job needs to be running after (in the case of a 'positive'
404 * job type) or before (in the case of a 'negative' job
407 /* Note that unit types have a say in what is runnable,
408 * too. For example, if they return -EAGAIN from
409 * unit_start() they can indicate they are not
412 /* First check if there is an override */
416 if (j->type == JOB_NOP)
419 if (j->type == JOB_START ||
420 j->type == JOB_VERIFY_ACTIVE ||
421 j->type == JOB_RELOAD) {
423 /* Immediate result is that the job is or might be
424 * started. In this case lets wait for the
425 * dependencies, regardless whether they are
426 * starting or stopping something. */
428 SET_FOREACH(other, j->unit->dependencies[UNIT_AFTER], i)
433 /* Also, if something else is being stopped and we should
434 * change state after it, then lets wait. */
436 SET_FOREACH(other, j->unit->dependencies[UNIT_BEFORE], i)
438 (other->job->type == JOB_STOP ||
439 other->job->type == JOB_RESTART))
442 /* This means that for a service a and a service b where b
443 * shall be started after a:
445 * start a + start b → 1st step start a, 2nd step start b
446 * start a + stop b → 1st step stop b, 2nd step start a
447 * stop a + start b → 1st step stop a, 2nd step start b
448 * stop a + stop b → 1st step stop b, 2nd step stop a
450 * This has the side effect that restarts are properly
451 * synchronized too. */
456 static void job_change_type(Job *j, JobType newtype) {
457 log_debug_unit(j->unit->id,
458 "Converting job %s/%s -> %s/%s",
459 j->unit->id, job_type_to_string(j->type),
460 j->unit->id, job_type_to_string(newtype));
465 int job_run_and_invalidate(Job *j) {
468 Manager *m = j->manager;
471 assert(j->installed);
472 assert(j->type < _JOB_TYPE_MAX_IN_TRANSACTION);
473 assert(j->in_run_queue);
475 LIST_REMOVE(run_queue, j->manager->run_queue, j);
476 j->in_run_queue = false;
478 if (j->state != JOB_WAITING)
481 if (!job_is_runnable(j))
484 j->state = JOB_RUNNING;
486 job_add_to_dbus_queue(j);
488 /* While we execute this operation the job might go away (for
489 * example: because it is replaced by a new, conflicting
490 * job.) To make sure we don't access a freed job later on we
491 * store the id here, so that we can verify the job is still
498 r = unit_start(j->unit);
500 /* If this unit cannot be started, then simply wait */
505 case JOB_VERIFY_ACTIVE: {
506 UnitActiveState t = unit_active_state(j->unit);
507 if (UNIT_IS_ACTIVE_OR_RELOADING(t))
509 else if (t == UNIT_ACTIVATING)
518 r = unit_stop(j->unit);
520 /* If this unit cannot stopped, then simply wait. */
526 r = unit_reload(j->unit);
534 assert_not_reached("Unknown job type");
537 j = manager_get_job(m, id);
540 r = job_finish_and_invalidate(j, JOB_DONE, true);
541 else if (r == -EBADR)
542 r = job_finish_and_invalidate(j, JOB_SKIPPED, true);
543 else if (r == -ENOEXEC)
544 r = job_finish_and_invalidate(j, JOB_INVALID, true);
545 else if (r == -EAGAIN) {
546 j->state = JOB_WAITING;
549 r = job_finish_and_invalidate(j, JOB_FAILED, true);
555 _pure_ static const char *job_get_status_message_format(Unit *u, JobType t, JobResult result) {
556 const UnitStatusMessageFormats *format_table;
560 assert(t < _JOB_TYPE_MAX);
562 format_table = &UNIT_VTABLE(u)->status_message_formats;
567 return format_table->finished_start_job[result];
568 else if (t == JOB_STOP || t == JOB_RESTART)
569 return format_table->finished_stop_job[result];
574 _pure_ static const char *job_get_status_message_format_try_harder(Unit *u, JobType t, JobResult result) {
579 assert(t < _JOB_TYPE_MAX);
581 format = job_get_status_message_format(u, t, result);
585 /* Return generic strings */
586 if (t == JOB_START) {
587 if (result == JOB_DONE)
588 return "Started %s.";
589 else if (result == JOB_FAILED)
590 return "Failed to start %s.";
591 else if (result == JOB_DEPENDENCY)
592 return "Dependency failed for %s.";
593 else if (result == JOB_TIMEOUT)
594 return "Timed out starting %s.";
595 } else if (t == JOB_STOP || t == JOB_RESTART) {
596 if (result == JOB_DONE)
597 return "Stopped %s.";
598 else if (result == JOB_FAILED)
599 return "Stopped (with error) %s.";
600 else if (result == JOB_TIMEOUT)
601 return "Timed out stoppping %s.";
602 } else if (t == JOB_RELOAD) {
603 if (result == JOB_DONE)
604 return "Reloaded %s.";
605 else if (result == JOB_FAILED)
606 return "Reload failed for %s.";
607 else if (result == JOB_TIMEOUT)
608 return "Timed out reloading %s.";
614 static void job_print_status_message(Unit *u, JobType t, JobResult result) {
619 assert(t < _JOB_TYPE_MAX);
621 DISABLE_WARNING_FORMAT_NONLITERAL;
623 if (t == JOB_START) {
624 format = job_get_status_message_format(u, t, result);
631 if (u->condition_result)
632 unit_status_printf(u, ANSI_GREEN_ON " OK " ANSI_HIGHLIGHT_OFF, format);
636 manager_flip_auto_status(u->manager, true);
637 unit_status_printf(u, ANSI_HIGHLIGHT_RED_ON "FAILED" ANSI_HIGHLIGHT_OFF, format);
638 manager_status_printf(u->manager, false, NULL, "See 'systemctl status %s' for details.", u->id);
642 manager_flip_auto_status(u->manager, true);
643 unit_status_printf(u, ANSI_HIGHLIGHT_YELLOW_ON "DEPEND" ANSI_HIGHLIGHT_OFF, format);
647 manager_flip_auto_status(u->manager, true);
648 unit_status_printf(u, ANSI_HIGHLIGHT_RED_ON " TIME " ANSI_HIGHLIGHT_OFF, format);
655 } else if (t == JOB_STOP || t == JOB_RESTART) {
657 format = job_get_status_message_format(u, t, result);
664 manager_flip_auto_status(u->manager, true);
665 unit_status_printf(u, ANSI_HIGHLIGHT_RED_ON " TIME " ANSI_HIGHLIGHT_OFF, format);
670 unit_status_printf(u, ANSI_GREEN_ON " OK " ANSI_HIGHLIGHT_OFF, format);
677 } else if (t == JOB_VERIFY_ACTIVE) {
679 /* When verify-active detects the unit is inactive, report it.
680 * Most likely a DEPEND warning from a requisiting unit will
681 * occur next and it's nice to see what was requisited. */
682 if (result == JOB_SKIPPED)
683 unit_status_printf(u, ANSI_HIGHLIGHT_ON " INFO " ANSI_HIGHLIGHT_OFF, "%s is not active.");
689 static void job_log_status_message(Unit *u, JobType t, JobResult result) {
695 assert(t < _JOB_TYPE_MAX);
697 /* Skip this if it goes to the console. since we already print
698 * to the console anyway... */
700 if (log_on_console())
703 format = job_get_status_message_format_try_harder(u, t, result);
707 DISABLE_WARNING_FORMAT_NONLITERAL;
708 snprintf(buf, sizeof(buf), format, unit_description(u));
712 if (t == JOB_START) {
715 mid = result == JOB_DONE ? SD_MESSAGE_UNIT_STARTED : SD_MESSAGE_UNIT_FAILED;
716 log_struct_unit(result == JOB_DONE ? LOG_INFO : LOG_ERR,
719 "RESULT=%s", job_result_to_string(result),
723 } else if (t == JOB_STOP)
724 log_struct_unit(result == JOB_DONE ? LOG_INFO : LOG_ERR,
726 MESSAGE_ID(SD_MESSAGE_UNIT_STOPPED),
727 "RESULT=%s", job_result_to_string(result),
731 else if (t == JOB_RELOAD)
732 log_struct_unit(result == JOB_DONE ? LOG_INFO : LOG_ERR,
734 MESSAGE_ID(SD_MESSAGE_UNIT_RELOADED),
735 "RESULT=%s", job_result_to_string(result),
740 int job_finish_and_invalidate(Job *j, JobResult result, bool recursive) {
747 assert(j->installed);
748 assert(j->type < _JOB_TYPE_MAX_IN_TRANSACTION);
755 if (j->state == JOB_RUNNING)
756 j->manager->n_running_jobs--;
758 log_debug_unit(u->id, "Job %s/%s finished, result=%s",
759 u->id, job_type_to_string(t), job_result_to_string(result));
761 job_print_status_message(u, t, result);
762 job_log_status_message(u, t, result);
764 job_add_to_dbus_queue(j);
766 /* Patch restart jobs so that they become normal start jobs */
767 if (result == JOB_DONE && t == JOB_RESTART) {
769 job_change_type(j, JOB_START);
770 j->state = JOB_WAITING;
772 job_add_to_run_queue(j);
777 if (result == JOB_FAILED || result == JOB_INVALID)
778 j->manager->n_failed_jobs ++;
783 /* Fail depending jobs on failure */
784 if (result != JOB_DONE && recursive) {
786 if (t == JOB_START ||
787 t == JOB_VERIFY_ACTIVE) {
789 SET_FOREACH(other, u->dependencies[UNIT_REQUIRED_BY], i)
791 (other->job->type == JOB_START ||
792 other->job->type == JOB_VERIFY_ACTIVE))
793 job_finish_and_invalidate(other->job, JOB_DEPENDENCY, true);
795 SET_FOREACH(other, u->dependencies[UNIT_BOUND_BY], i)
797 (other->job->type == JOB_START ||
798 other->job->type == JOB_VERIFY_ACTIVE))
799 job_finish_and_invalidate(other->job, JOB_DEPENDENCY, true);
801 SET_FOREACH(other, u->dependencies[UNIT_REQUIRED_BY_OVERRIDABLE], i)
803 !other->job->override &&
804 (other->job->type == JOB_START ||
805 other->job->type == JOB_VERIFY_ACTIVE))
806 job_finish_and_invalidate(other->job, JOB_DEPENDENCY, true);
808 } else if (t == JOB_STOP) {
810 SET_FOREACH(other, u->dependencies[UNIT_CONFLICTED_BY], i)
812 (other->job->type == JOB_START ||
813 other->job->type == JOB_VERIFY_ACTIVE))
814 job_finish_and_invalidate(other->job, JOB_DEPENDENCY, true);
818 /* Trigger OnFailure dependencies that are not generated by
819 * the unit itself. We don't treat JOB_CANCELED as failure in
820 * this context. And JOB_FAILURE is already handled by the
822 if (result == JOB_TIMEOUT || result == JOB_DEPENDENCY) {
823 log_struct_unit(LOG_NOTICE,
825 "JOB_TYPE=%s", job_type_to_string(t),
826 "JOB_RESULT=%s", job_result_to_string(result),
827 "Job %s/%s failed with result '%s'.",
829 job_type_to_string(t),
830 job_result_to_string(result),
833 unit_start_on_failure(u);
836 unit_trigger_notify(u);
839 /* Try to start the next jobs that can be started */
840 SET_FOREACH(other, u->dependencies[UNIT_AFTER], i)
842 job_add_to_run_queue(other->job);
843 SET_FOREACH(other, u->dependencies[UNIT_BEFORE], i)
845 job_add_to_run_queue(other->job);
847 manager_check_finished(u->manager);
852 static int job_dispatch_timer(sd_event_source *s, uint64_t monotonic, void *userdata) {
856 assert(s == j->timer_event_source);
858 log_warning_unit(j->unit->id, "Job %s/%s timed out.",
859 j->unit->id, job_type_to_string(j->type));
861 job_finish_and_invalidate(j, JOB_TIMEOUT, true);
865 int job_start_timer(Job *j) {
868 if (j->timer_event_source)
871 j->begin_usec = now(CLOCK_MONOTONIC);
873 if (j->unit->job_timeout <= 0)
876 r = sd_event_add_time(
878 &j->timer_event_source,
880 j->begin_usec + j->unit->job_timeout, 0,
881 job_dispatch_timer, j);
888 void job_add_to_run_queue(Job *j) {
890 assert(j->installed);
895 if (!j->manager->run_queue)
896 sd_event_source_set_enabled(j->manager->run_queue_event_source, SD_EVENT_ONESHOT);
898 LIST_PREPEND(run_queue, j->manager->run_queue, j);
899 j->in_run_queue = true;
902 void job_add_to_dbus_queue(Job *j) {
904 assert(j->installed);
906 if (j->in_dbus_queue)
909 /* We don't check if anybody is subscribed here, since this
910 * job might just have been created and not yet assigned to a
911 * connection/client. */
913 LIST_PREPEND(dbus_queue, j->manager->dbus_job_queue, j);
914 j->in_dbus_queue = true;
917 char *job_dbus_path(Job *j) {
922 if (asprintf(&p, "/org/freedesktop/systemd1/job/%"PRIu32, j->id) < 0)
928 int job_serialize(Job *j, FILE *f, FDSet *fds) {
929 fprintf(f, "job-id=%u\n", j->id);
930 fprintf(f, "job-type=%s\n", job_type_to_string(j->type));
931 fprintf(f, "job-state=%s\n", job_state_to_string(j->state));
932 fprintf(f, "job-override=%s\n", yes_no(j->override));
933 fprintf(f, "job-irreversible=%s\n", yes_no(j->irreversible));
934 fprintf(f, "job-sent-dbus-new-signal=%s\n", yes_no(j->sent_dbus_new_signal));
935 fprintf(f, "job-ignore-order=%s\n", yes_no(j->ignore_order));
937 if (j->begin_usec > 0)
938 fprintf(f, "job-begin="USEC_FMT"\n", j->begin_usec);
940 bus_track_serialize(j->subscribed, f);
947 int job_deserialize(Job *j, FILE *f, FDSet *fds) {
951 char line[LINE_MAX], *l, *v;
954 if (!fgets(line, sizeof(line), f)) {
975 if (streq(l, "job-id")) {
977 if (safe_atou32(v, &j->id) < 0)
978 log_debug("Failed to parse job id value %s", v);
980 } else if (streq(l, "job-type")) {
983 t = job_type_from_string(v);
985 log_debug("Failed to parse job type %s", v);
986 else if (t >= _JOB_TYPE_MAX_IN_TRANSACTION)
987 log_debug("Cannot deserialize job of type %s", v);
991 } else if (streq(l, "job-state")) {
994 s = job_state_from_string(v);
996 log_debug("Failed to parse job state %s", v);
1000 } else if (streq(l, "job-override")) {
1003 b = parse_boolean(v);
1005 log_debug("Failed to parse job override flag %s", v);
1007 j->override = j->override || b;
1009 } else if (streq(l, "job-irreversible")) {
1012 b = parse_boolean(v);
1014 log_debug("Failed to parse job irreversible flag %s", v);
1016 j->irreversible = j->irreversible || b;
1018 } else if (streq(l, "job-sent-dbus-new-signal")) {
1021 b = parse_boolean(v);
1023 log_debug("Failed to parse job sent_dbus_new_signal flag %s", v);
1025 j->sent_dbus_new_signal = j->sent_dbus_new_signal || b;
1027 } else if (streq(l, "job-ignore-order")) {
1030 b = parse_boolean(v);
1032 log_debug("Failed to parse job ignore_order flag %s", v);
1034 j->ignore_order = j->ignore_order || b;
1036 } else if (streq(l, "job-begin")) {
1037 unsigned long long ull;
1039 if (sscanf(v, "%llu", &ull) != 1)
1040 log_debug("Failed to parse job-begin value %s", v);
1042 j->begin_usec = ull;
1044 } else if (streq(l, "subscribed")) {
1046 if (strv_extend(&j->deserialized_subscribed, v) < 0)
1052 int job_coldplug(Job *j) {
1057 /* After deserialization is complete and the bus connection
1058 * set up again, let's start watching our subscribers again */
1059 r = bus_track_coldplug(j->manager, &j->subscribed, &j->deserialized_subscribed);
1063 if (j->state == JOB_WAITING)
1064 job_add_to_run_queue(j);
1066 if (j->begin_usec == 0 || j->unit->job_timeout == 0)
1069 if (j->timer_event_source)
1070 j->timer_event_source = sd_event_source_unref(j->timer_event_source);
1072 r = sd_event_add_time(
1074 &j->timer_event_source,
1076 j->begin_usec + j->unit->job_timeout, 0,
1077 job_dispatch_timer, j);
1079 log_debug("Failed to restart timeout for job: %s", strerror(-r));
1084 void job_shutdown_magic(Job *j) {
1087 /* The shutdown target gets some special treatment here: we
1088 * tell the kernel to begin with flushing its disk caches, to
1089 * optimize shutdown time a bit. Ideally we wouldn't hardcode
1090 * this magic into PID 1. However all other processes aren't
1091 * options either since they'd exit much sooner than PID 1 and
1092 * asynchronous sync() would cause their exit to be
1095 if (j->type != JOB_START)
1098 if (j->unit->manager->running_as != SYSTEMD_SYSTEM)
1101 if (!unit_has_name(j->unit, SPECIAL_SHUTDOWN_TARGET))
1104 /* In case messages on console has been disabled on boot */
1105 j->unit->manager->no_console_output = false;
1107 if (detect_container(NULL) > 0)
1110 asynchronous_sync();
1113 int job_get_timeout(Job *j, uint64_t *timeout) {
1115 uint64_t x = -1, y = -1;
1120 if (j->timer_event_source) {
1121 r = sd_event_source_get_time(j->timer_event_source, &x);
1127 if (UNIT_VTABLE(u)->get_timeout) {
1128 q = UNIT_VTABLE(u)->get_timeout(u, &y);
1133 if (r == 0 && q == 0)
1136 *timeout = MIN(x, y);
1141 static const char* const job_state_table[_JOB_STATE_MAX] = {
1142 [JOB_WAITING] = "waiting",
1143 [JOB_RUNNING] = "running"
1146 DEFINE_STRING_TABLE_LOOKUP(job_state, JobState);
1148 static const char* const job_type_table[_JOB_TYPE_MAX] = {
1149 [JOB_START] = "start",
1150 [JOB_VERIFY_ACTIVE] = "verify-active",
1151 [JOB_STOP] = "stop",
1152 [JOB_RELOAD] = "reload",
1153 [JOB_RELOAD_OR_START] = "reload-or-start",
1154 [JOB_RESTART] = "restart",
1155 [JOB_TRY_RESTART] = "try-restart",
1159 DEFINE_STRING_TABLE_LOOKUP(job_type, JobType);
1161 static const char* const job_mode_table[_JOB_MODE_MAX] = {
1162 [JOB_FAIL] = "fail",
1163 [JOB_REPLACE] = "replace",
1164 [JOB_REPLACE_IRREVERSIBLY] = "replace-irreversibly",
1165 [JOB_ISOLATE] = "isolate",
1166 [JOB_FLUSH] = "flush",
1167 [JOB_IGNORE_DEPENDENCIES] = "ignore-dependencies",
1168 [JOB_IGNORE_REQUIREMENTS] = "ignore-requirements",
1171 DEFINE_STRING_TABLE_LOOKUP(job_mode, JobMode);
1173 static const char* const job_result_table[_JOB_RESULT_MAX] = {
1174 [JOB_DONE] = "done",
1175 [JOB_CANCELED] = "canceled",
1176 [JOB_TIMEOUT] = "timeout",
1177 [JOB_FAILED] = "failed",
1178 [JOB_DEPENDENCY] = "dependency",
1179 [JOB_SKIPPED] = "skipped",
1180 [JOB_INVALID] = "invalid",
1183 DEFINE_STRING_TABLE_LOOKUP(job_result, JobResult);